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allow designers to create enemy behaviors, interactive objects, and Shank controls.In the end, we built 13 levels in three months using these tools and the fact that our programming team worked a total of possibly three overtime weekends throughout the entire project is a testament to how robust our tools are." Each month, game creators put their work on the NBA Live Coins dissecting table so that Game Developer readers can learn what went right and what went wrong during a given project. In another

feature, 'Dissecting The Postmortem', Ara Shirinian looks at the Madden NFL 17 Coins big picture and collects data from past postmortems to identify the common issues affecting the game development process. Also in this issue, Google's Chris Pruett examines the 'Two-Factor Theory of Emotion', which describes how emotional states can be modulated by physiological changes. Stressful situations increase engagement and can give rise to often contradictory emotions. It's an idea that has wide implications for

design and goes against the conventional wisdom regarding easy difficulty in games. In addition, the February issue features our regular columnists and special guests including Geoff Evans, David Edery, Mathew Kumar, Steve Theodore, Damion Schubert, Scott Lawlor, and Matthew Wasteland -- who contribute detailed and important pieces on various areas of game development.Worldwide paper-based subscriptions to Game Developer magazine are currently available at the official magazine

, and the Game Developer Digital version of the issue is also now available, with the site offering six months' and a year's subscriptions, alongside access to MMOGO back issues and PDF downloads of all issues, all for a reduced price. There is now also an opportunity to buy the digital version of February 2011s magazine as a single issue.